Ventilator.



J. W. ELLIS.

VENTILATOR.

APPLIGATION FILED JAN 29, 1908.

Patented Jan. 12, 1909.

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JOHN W. ELLIS, OF PORTLAND, MAINE.

VENTILATOR.

Specification of Letters Patent.

Patented Jan. 12, 1909.

Application filed January 29, 1908. Serial No. 413,230.

To all whom it may concern:

Be it known that I, OHN W'. ELLIS, a citizen of the United States, residing at Portland, county of Cumberland, State of Maine, have invented certain new and useful Improvements in Ventilators, of which the fol lowing is a specification.

This invention relates to ventilators and more particularly to av ventilator for use in a window. In ventilators of this sort it is extremely desirable to secure a steady and free current of air without having it occur as a direct draft or blast and for this purpose I have devised my present invention in which I have provided for securing this result in a convenient and efficient manner and by means which are simple, and structurally strong and stable. These means involve the employment of parts so disposed as to cause an indirect draft by means of deflecting agencies the structure of whichwill be more fully set forth in the specification and-will be illustrated by the disclosure of an embodiment of my inventionin a form particularly adapted to be inserted between the lower sash of a window and the window sill for allowing a current of air to pass through to secure the ventilation of a room. This I have illustrated in the drawings which form a part of the specification being made a part thereof by reference and by means of reference numerals applied to the-various parts uniformly throughoutboth.

In the drawings Figure 1 is an outside elevation in place, Fig. 2, an inside elevation in place and partly in section, Fig. 3, atop plan viewof mv ventilator, and Fig. 4:, a vertical section of ventilator in place.

1, 2, 3, and 4 are the top, outside, bottom, and inside walls of a ventilator. wall 1 is provided with a strip 5 against which the lower bar 6 of the sash Tests to prevent drafts, while the outer wall 2 is carried down below the bottom 3 to form a projecting flange which will coiiperate with the edge of the window sill to make a draft shield along the line of meeting between ventilator and sill 7. The outer wall 2 is slotted as at 8 and in case of broad windows I leave between the ends of slots supporting sections 2 These slots are covered by a screen 9 the arrangement of which I willv severest weather.

The top.

by a knob 13 projecting through a slot 14 in' the top 1, and about midway thereof.

Below the openings 8 in the outside wall 2 is formed a vertical groove 16 and in the front or outer edge of the bottom 3 and opposite to the groove 16 is formed a similar groove 15 which with the groove 16 forms a tubular drain for any moisture which 'may heat into the ventilator through the screen 9 of the openings 8. The lower edge of the screen 9 is la'id'between the forward. edge of the bottom wall 3 and the inner face of the outer wall 2 in the assembling of the parts. On the internal face of the inside wall 4 is a kerf in which are set a plurality of deflecting strips 17 which lie'in front of the apertures 10. The ends of these strips bear against the upper edge of the screen 9 and press it against the internal face of the outside wall, thus holding it firmly in place over the openings 8.

18 are handles for convenience in putting the ventilator in place or removing it from window if it is desired to do so although on account of the closing slide 12 it is not necessary to remove the ventilator even in the As will be seen the ventilator may easily made'in any length desired and'affords a simple and eflicient structure. The

embodiment shown and described might obviously be varied without departing from the spirit of my invention. It is also obvious that this ventilator might be applied in the same manner or-in a modified form for use at the top of a window or in a similar situation. ,In preparing a ventilator for use at the top of a window it would be desirable to have the openings 10 in the inside wall 4 instead of on the top 1. In this arrangement the openings 10 would be located above the plane of the transverse deflector 17 around which the air current would have to pass, as before described.

What I thereforeclaim and desire to secure by Letters Patent'is:

1. A.ventilator comprising a longitudinal chamber having an opening in one side thereof for communication with the outside top ralit'y of deflectors-within said chamber one 2. A ventilator comprising-a longitudinal chamber having an opening in one side thereof and an opening in the top, a screen over said first nanied opening, .and'a deflector within saidchamber in front of said last mentioned opening, the end of said deflector litlaaring against said screen to hold it in ace. 1 p 3. A window. ventilator Comprising a longitudinal 'ohamber having an opening in one side thereof for communication with the outside and a 'pluralityozf openings in the for communication with the room, a pluin front of each of said last named openings said deflectors being spaced apart to allow a current of air to pass between them; and a slide for opening or, closing saidopeningsin the top.

4. In a ventilator box having oppositely aaaesr disposed walls and an intake openin .in one Wall, a groove in the opposite wal and a screen over said opening," strip in said groove and end a ainst the edge of said screen,

5. n a ventilator of the class described having a plurality of vertically disposed es-' cape openings and a plurality of horizon-- tally disposed intake openings,'a plurality of deflector plates dlsposed in the direct and a deflector bearing with its lines between said openings, but spaced apart 7 to allow the passage of a current of air between said plates.

In testimony whereof, I affix my signature in presence of'two witnesses.

JQHN 'W. ELLIS. v

Witnesses:

ELLIS SPEAK, 51a, KoR'AN C. SMALL. 1 

